2. The Kalalau Trail
The Kalalau Trail is an 11-mile trail that leads from Ke’e Beach to Kalalau Beach along the Na Pali Coast on the island of Kauai in Hawaii. The trail climbs up to towering sea cliffs, drops down to lush valleys and all the way down to sea level. Hawaii is home to a large number of endemic species, or species that can only be found there, so the flora and fauna are sure to delight.